Merge "Account for animating children when updating task visibility" into...

Merge "Account for animating children when updating task visibility" into tm-dev am: 1a6203e0 am: a2afb2e7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17006986

Change-Id: Ib406a976507f4b617e030a9c268f9f25db5a7c5f